Here's the question you clicked on:
steffanie_0831
How can you write the expression with rationalized denominator?
|dw:1356759829919:dw|
Multiply top and bottom for \[\sqrt{3} - \sqrt{6}\]
This is normally accomplished by multiplying by conjugate/conjugate. The conjugate of a + b is a - b.
|dw:1356759981331:dw| WHICH ONE?
C is the correct choice
Do you see why? When the multiplication is complete and everything is simplified, this is what you get.
yeah. i think i get it now thanks